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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/pnp/support.c
downloadlwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
lwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/pnp/support.c')
-rw-r--r--drivers/pnp/support.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/pnp/support.c b/drivers/pnp/support.c
new file mode 100644
index 000000000000..b952aec49189
--- /dev/null
+++ b/drivers/pnp/support.c
@@ -0,0 +1,40 @@
+/*
+ * support.c - provides standard pnp functions for the use of pnp protocol drivers,
+ *
+ * Copyright 2003 Adam Belay <ambx1@neo.rr.com>
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/ctype.h>
+
+#ifdef CONFIG_PNP_DEBUG
+ #define DEBUG
+#else
+ #undef DEBUG
+#endif
+
+#include <linux/pnp.h>
+#include "base.h"
+
+/**
+ * pnp_is_active - Determines if a device is active based on its current resources
+ * @dev: pointer to the desired PnP device
+ *
+ */
+
+int pnp_is_active(struct pnp_dev * dev)
+{
+ if (!pnp_port_start(dev, 0) && pnp_port_len(dev, 0) <= 1 &&
+ !pnp_mem_start(dev, 0) && pnp_mem_len(dev, 0) <= 1 &&
+ pnp_irq(dev, 0) == -1 &&
+ pnp_dma(dev, 0) == -1)
+ return 0;
+ else
+ return 1;
+}
+
+
+
+EXPORT_SYMBOL(pnp_is_active);